Published online by Cambridge University Press: 08 February 2018
Frenquel, α-(4-piperidyl) benzhydrol hydrochloride, generically known as Azacyclonal hydrochloride was introduced commercially into this country in the early part of 1957 although it had already been available in the United States of America for several months previously. Sargant (1956) obtained a supply of Azacyclonal from America and in his paper on Chemical Tranquillizers he refers to Azacyclonal as “an interesting drug”. Azacyclonal was thought to be the first drug to possess a specific anti-hallucinatory effect.
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